Metallic vessel



Mar. 13, 1923. 1,448,344. a. F. HAUF.

METALLIC VESSEL.

FILED NOV. 6, 1920.

Fatented Mar. '13, 1923.

UNITED STATES PATENT OFFICE.-

I GEORGE F. HAUF, OF CHICAGO, ILLINOIS, ASSIGNOR TO ROBERTSON BROTHERS MANU- FACTURING COMPANY, OF CHICAGO, ILLINOIS.

METALLIC VESSEL.

Application filed. November 6, 1920. Serial No. 422,203.

To all whom it may concern:

Be it known that I, GEORGE F. HAUF, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Metallic Vessels, of which the following is a specification.

This invention relates to metallicvessels.

It pertains to metallic vessels wherein adjacent walls are formed of separate pieces joined together at their edges.

,In vessels 'of this character, especially those for containing liquids and subject to severe service, such for example, as gasoline tanks for automobiles, trucks and tractors, considerable difliculty has been experienced in securing tight and lasting joints.

It has also been difficult to prevent the bulging of the sides, especially those of submanufacture. v

. An object of the present invention is'to provide a vessel having tight and lasting joints at the joined edges of adjacent sides.

Another object is to provide a vessel wherein the tendency of substantially fiat sides to bulge is materially reduced.

Another object is to provide an improved tank for holding liquids.

Other objects and advantages will hereinafter appear.

An embodiment of invention is illustrated in the accompanying drawings, wherein- Figure 1 is a perspective of a tank such as used for the gasoline receptacle of an automobile, truck or tractor.

Fig. 2 is a longitudinal axial section thereof, the right hand end showing a finished joint and the left hand 'end showing a joint at one stage of itsformation,

Fig. 3 is a plan ofone of the substantially fiat ends, and

Fig. 4 is an enlarged section through one of the joints.

The tank chosen for illustration is constructed primarily of three pieces of sheet metal, a body and two ends.'

The body of the tank is a seamless cylinder 5 which may be provided with any desired type of filler opening and cap.

When completed, each end of cylinder 5 is formed into a continuous concave bead 6 and a continuous convex bead 7. Beads 6 and 7 substantially align with the wall of 55 the cylinder, are oppositely disposed and stantially fiat formation, during and after merge into each other along (T16 side; that is, the outer side of the concave bead forms the inner side of the convex bead. These beads may be formed, for example, by b nd ing or rolling the ends of the cylinder.

The outer edge of bead 7, or the extreme edge of the cylinder, lies within or has a shorter radius than the circle of the apex of the concave bead.

Each'end of cylinder 5 is closed by a substantially flat end wall 8. End wall 8 has its edge turned slightly inward for a short distance to form a diagonally disposed annular flange 9. It is also provided with an outer bead 10 and an inner bead 11. Flange 9 and beads 10 and 11 serve to strengthen the end of the tank. The beads also serve to support the tank clear of the joints when it is set on one end.

Flange 9 lies within and extends diagonally across bead 7 roviding a space 12 between the outer sur ace 'of the flange and the inner surface of the individual side of the convex bead. This space is filled with solder13 which securely holds the ends and body together and forms a tight joint therebetween. Flange 9.also serves as a diagonal brace for strengthening bead 7 which forms the corner of the tank.

The tank may be made in 'the, following manner:

The body 5 is formed with only the concave beads,'the extreme ends of the body which form the convex beads being left straight as shown at the left of Fig. 2. Each end wall 8 is inserted in the body until its flange 9 rests upon the outer wall of the concave bead. Then the rim of the body is forced over the flange of the end to form,

the convex bead. The end walls are thus more or less wedged in place between the common wall of the beads and the outer or individual walls of the convex beads. With a soldering iron, solder is run under the outeredge of the convex bead to fill the space between the flange and the bead.

The common side of the two adjacent beads in-the body serves as a stop and rest for the end wall when the same is placed in position. Any inequalities in the diameter of the body or ends are accommodated by the sloping sides of the beads, the ends entering the body until the flanges strike the beads. The overlapplng of the flange of the end by the outer side of the convex bead serves to hold the end in place until the soldering operation is completed and assists in securing the end in place and strengthening the joint. The space between the flange and the outer wall of the convex bead provides a reservoir for a sufficient quantity of solder to insure a tight joint and the end is not subjected to undue pressure in forming the joint, so that the tendency of the end to bulge is reduced.

The outer strengthening bead 10 of the end walls, if positioned a short distance from the flange thereof, may serve as a gage for the soldering iron or other soldering tool.

Having described my invention, what I claim as new and desire to secure by Letters Patent is l. A metallic vessel having a wall formed with two heads substantially aligned therewith and having a common side, and a wall, formed'with a diagonally disposed flange fitting diagonally across one of the beads and against the common side thereof.

2. A metallic vessel having a wall formed with two beads adjacent one edge thereof, said beads having a common side, a second wall formed with a diagonally disposed flange fitting across one of the beads and having its edge diagonally abutting the common side of the beads, and a filling of solder between the flange anda side of the bead.

3. A metallic tank comprising a cylinand serves to strengthen the bead and form a solder space therein. v

4. A tank comprising a one-piece cylindrical body having an annular convex head at one edge and an annular concave bead adjacent the convex head, the two heads having one side in common, a one-piece circular end having an annular diagonally disposed flange fitting diagonally against the convex bead and held between the common side of the beads and the individual side of the convex bead, and a filling of solder between the flange and the individual side of the com'ex bead;

5. A metallic vessel comprising a one piece cylindrical body having two annular beads adjacent one end, said beads having a common side, a one piece circular bottom having an annular diagonally disposed outer flange which bridges one of the beads to form an annular solder space and a filling of solder in the space.

In testimony whereof I hereunto subscribe my name.

GEORGE F. HAUF. 

